50 Billion Planets!

TLAM Strike · 02-20-11, 09:49 PM

Quote:

Originally Posted by Castout

You know what there is a lot of gold bars in Fort Knox.

It doesn't mean any one of us could come to get it.

If you had a thermonuclear bomb you could...
cue Goldfinger...

And if you had enough of them you could go to other planets...

Screw you guys, I'm going to Rigel Kentaurus...
^Where can I get that on a T Shirt?

Studies in the 1960s-1970s calculated than an Orion drive spacecraft could reach speeds of 5-10% of c. That makes a flight to Alpha Centaruri a trip of ~30-40 years.

Think I'm making this stuff up? NASA really considered such a mission!

Castout · 02-20-11, 10:13 PM

Quote:

Originally Posted by TLAM Strike

Studies in the 1960s-1970s calculated than an Orion drive spacecraft could reach speeds of 5-10% of c. That makes a flight to Alpha Centaruri a trip of ~30-40 years.

Think I'm making this stuff up? NASA really considered such a mission!

Well even if we reach 100% light speed many galaxies are million of light years away

we better hurry because the space is expanding and distancing themselves

I'm sure pre-historic men too once wonder if he could go to the sun to take a look. Now we can wonder the same too but still unable to do so

Raptor1 · 02-20-11, 10:22 PM

Quote:

Originally Posted by Castout

Well even if we reach 100% light speed many galaxies are million of light years away

we better hurry because the space is expanding and distancing themselves

I'm sure pre-historic men too once wonder if he could go to the sun to take a look. Now we can wonder the same too but still unable to do so

Well, technically, if you somehow reach 1 c, then it won't take you any (proper) time to get there at all. The problem is knowing when to stop...

Sailor Steve · 02-20-11, 10:23 PM

Fifty billion? I've never seen one. Therefore they don't exist.

razark · 02-20-11, 10:27 PM

Quote:

Originally Posted by Sailor Steve

I've never seen one.

Walk outside. Look down.

There's one!

Sailor Steve · 02-20-11, 10:30 PM

Quote:

Originally Posted by razark

Walk outside. Look down.

There's one!

I just did. All I saw was dirt. I don't get it.

razark · 02-20-11, 10:38 PM

Quote:

Originally Posted by Sailor Steve

I just did. All I saw was dirt. I don't get it.

You need to look under the dirt, I guess.

TLAM Strike · 02-20-11, 10:41 PM

Quote:

Originally Posted by Castout

Well even if we reach 100% light speed many galaxies are million of light years away

we better hurry because the space is expanding and distancing themselves

Not a problem if you can reach 1 c (well you can't but you can reach something like .9999 c in theory) when that happens a wonderful little thing call Time Dilation occurs. Time for the crew of the Spacecraft in flight will change. At .9999 of c it will change by a factor of 70! Basically for every day on Earth the spaceship's crew will travel the distance of 2.59x10^10 km x 70 (approx 1/5th of a light year per day) because from their perspective the universe is traveling 70 times faster, in essence they are traveling though time as well as space.

Castout · 02-20-11, 11:04 PM

Quote:

Originally Posted by TLAM Strike

Not a problem if you can reach 1 c (well you can't but you can reach something like .9999 c in theory) when that happens a wonderful little thing call Time Dilation occurs. Time for the crew of the Spacecraft in flight will change. At .9999 of c it will change by a factor of 70! Basically for every day on Earth the spaceship's crew will travel the distance of 2.59x10^10 km x 70 (approx 1/5th of a light year per day) because from their perspective the universe is traveling 70 times faster, in essence they are traveling though time as well as space.

. . . . . .

[get back]

. . . . . .

[get back]

. . . . . . .

i'm afraid I'm too dumb to understand that

Gargamel · 02-20-11, 11:09 PM

Just finished reading "Ender's Game" and "The speaker for the Dead" (sequels). They do a decent job of describing the relativistic effects of time dilation on the human person. And they're really good reads too.

TLAM Strike · 02-20-11, 11:18 PM

Quote:

Originally Posted by Castout

. . . . . .

[get back]

. . . . . .

[get back]

. . . . . . .

i'm afraid I'm too dumb to understand that

oooo-k... Let me try explaining it to you a different way...

... Planet of the Apes... yes the movie (not the actual planet)... No the original one! You travel at the speed of light around the universe and come back to Earth and billions of years have passed, but you are just a few months older. Got it now?

Castout · 02-20-11, 11:37 PM

Quote:

Originally Posted by TLAM Strike

oooo-k... Let me try explaining it to you a different way...

... Planet of the Apes... yes the movie (not the actual planet)... No the original one! You travel at the speed of light around the universe and come back to Earth and billions of years have passed, but you are just a few months older. Got it now?

Umm I got that idea from the beginning but how I just couldn't understand it logically speaking. I can grab the idea but not understand why it is so.

kiwi_2005 · 02-20-11, 11:52 PM

we will probably never reach those planets. Maybe in our solar system but not beyond

We would need to figure out or find a

Worm hole.
Black hole - then we would have to suvive the black hole according to scientist eveything breaks up inside the black hole.
Warp drive - speed of light travel.
Gravity.

To travel from one end of the milky way to the other traveling at the speed of light would take 100,000 years.

A worm hole would be the best way to travel we would get to our destination in seconds. Im sure thats how the Aliens do it.

Mass Effect 2 game got me thinking about this.

Sailor Steve · 02-21-11, 12:47 AM

Quote:

Originally Posted by Castout

Umm I got that idea from the beginning but how I just couldn't understand it logically speaking. I can grab the idea but not understand why it is so.

Actually it works both ways. The faster you go the longer it takes the light from your starting point to reach you, hence the slower things there would appear to move (assuming you could see them). Unfortunately relativity works both ways, so the light from your spaceship would have the same problem, so the reality is that time would seem to slow down on earth if you could see it.

Or at least that's the way it would work for two spaceships, since neither one is travelling at all except when compared to the other.

Buuuut...

Gravity seems to throw that all out of whack, so to a person in a gravity well (such as a planet like earth) the spaceship, which has no gravity of its own (none to speak of anyway) really would appear to be passing time more slowly. Here's a simple explanation:
http://en.wikipedia.org/wiki/Time_dilation

And this one's a little easier to understand:
http://en.wikipedia.org/wiki/Twin_paradox

Skybird · 02-21-11, 05:05 PM

Quote:

Originally Posted by Castout

Well even if we reach 100% light speed

100% light speed means the object travelling that fast has infinite mass. So much for linear travelling at super-dooper speed.

Quote:

many galaxies are million of light years away

we better hurry because the space is expanding and distancing themselves

Make that "most galaxies" and "billions of light years".

However, the theory of the fluctuating universe gives hope that in a far away future things will move together again - so close that finally all existing matter and energy and gravitation and space-time collapse into one singular point again, causing the show to start from new with Bang.

02-20-11, 10:23 PM	#4
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	Fifty billion? I've never seen one. Therefore they don't exist. __________________ “Never do anything you can't take back.” —Rocky Russo

02-20-11, 11:09 PM	#10
Gargamel Lucky Sailor Join Date: Oct 2010 Location: Rome Posts: 4,273 Downloads: 81 Uploads: 0	Just finished reading "Ender's Game" and "The speaker for the Dead" (sequels). They do a decent job of describing the relativistic effects of time dilation on the human person. And they're really good reads too. __________________ Luck is a residue of Design.

02-20-11, 11:52 PM	#13
kiwi_2005 Eternal Patrol Join Date: May 2004 Location: Aeoteroa Posts: 7,382 Downloads: 223 Uploads: 1	we will probably never reach those planets. Maybe in our solar system but not beyond We would need to figure out or find a Worm hole. Black hole - then we would have to suvive the black hole according to scientist eveything breaks up inside the black hole. Warp drive - speed of light travel. Gravity. To travel from one end of the milky way to the other traveling at the speed of light would take 100,000 years. A worm hole would be the best way to travel we would get to our destination in seconds. Im sure thats how the Aliens do it. Mass Effect 2 game got me thinking about this. __________________ RIP kiwi_2005 Those who can't laugh at themselves leave the job to others.